错误信息：
严重: Servlet.service() for servlet [controller] in context with path [/gxbms] threw exception [Request processing failed; nested exception is org.springframework.web.bind.annotation.support.HandlerMethodInvocationException: Failed to invoke handler method [public void cn.cnic.cstnet.SCP.controller.FileController.uploadProjectFile(int,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws javax.servlet.ServletException,java.io.IOException]; nested exception is java.lang.IllegalStateException: Optional int parameter 'folderId' is not present but cannot be translated into a null value due to being declared as a primitive type. Consider declaring it as object wrapper for the corresponding primitive type.] with root cause严重: Servlet.service() for servlet [cont
